Katzmann, Robert A.
Judging statutes / Robert A. Katzmann
Oxford University Press, 2014
 Buku Teks
Transportation policy
Elsevier scine publisher , 2018
 Majalah, Jurnal, Buletin
Lieb, Robert C.
Transportation / Robert C. Lieb
Reston Publ, 1985
 Buku Teks
Graysmith, Robert.
Zodiac /​ Robert Graysmith.
Berkley Books, 1986
 Buku Teks
Peterson, Robert A.
Marketing research /​ Robert A. Peterson
Business Publications , 1982
 Buku Teks